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From Jun Rao <jun...@gmail.com>
Subject Re: ClientUtils.fetchTopicMetadata reports smaller ISR than ZkUtils.getLeaderIsrAndEpochForPartition
Date Thu, 05 Dec 2013 05:55:42 GMT
Do you see any ISR churns on the brokers? You can check the ISR
expand/shrink rate jmx.

Thanks,

Jun


On Wed, Dec 4, 2013 at 3:53 PM, Ryan Berdeen <rberdeen@hubspot.com> wrote:

> I'm working on some monitoring tools for Kafka, and I've seen a couple of
> clusters get into a state where ClientUtils.fetchTopicMetadata will show
> that not all replicas are in the ISR.
>
> At the same time, ZkUtils.getLeaderIsrAndEpochForPartition will show that
> all all partitions are in the ISR, and
> the "kafka.server":name="UnderReplicatedPartitions",type="ReplicaManager"
> MBean will report 0.
>
> What's going on? Is there something wrong with my controller, or should I
> not be paying attention to ClientUtils.fetchTopicMetadata?
>
> Thanks,
>
> Ryan
>

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